<template>
  <div>
    <!--面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索 与 添加 区域 -->
      <!-- Layout 布局是24分栏 -->
      <!-- :gutter 指定每一栏的间隔 -->
      <el-row :gutter="20">
        <!-- :span 指定宽度  -->
        <el-col :span="7">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userlist" :border="true" :stripe="true">
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <template slot-scope="scope">
            <!-- {{scope.row}} -->
            <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="SetRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[1,2,10, 20, 50,100, 200, 300, 400]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
    </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%" @close="addDialogClosed"
      >
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px" >
        <!-- prop指定具体的校验规则 -->
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%">
      <!-- 主体区域 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed">
      <p>当前的用户：{{userInfo.username}}</p>
      <p>当前的角色：{{userInfo.role_name}}</p>
      <p>分配新角色
        <el-select v-model="selectedRoleId" placeholder="请选择">
          <el-option
            v-for="item in rolesList"
            :key="item.value"
            :label="item.roleName"
            :value="item.id">
          </el-option>
        </el-select>
      </p>
      
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    // var checkEmail = (rule, value, cb) => {
    //   reg
    // },
    // 这里为什么要写在return的外面
    var checkMobile = (rule, value, cb) => {
      // 验证手机的校验规则
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum:1,
        // 当前每页显示多少条数据
        pagesize:2
      },
      // 用户列表
      userlist: [],
      total:0,
      // 控制添加用户对话框的显示和隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' }, 
          { 
            min: 3, 
            max: 10, 
            message: '用户名的长度在3~10个字符之间',
            trigger: 'blur' 
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' }, { min: 6, max: 15, message: 
            '密码的长度在6~15个字符之间', trigger: 'blur' }
        ],
        email: [
           { required: true, message: '请输入邮箱', trigger: 'blur' },
           { type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur','change']}
        ],
        mobile: [
           { required: true, message: '请输入手机号', trigger: 'blur' },
           { validator: checkMobile, trigger: ['blur','change']}
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 添加表单的验证规则对象
      editFormRules: {
        email: [
           { required: true, message: '请输入邮箱', trigger: 'blur' },
           { type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur','change']}
        ],
        mobile: [
           { required: true, message: '请输入手机号', trigger: 'blur' },
           { validator: checkMobile, trigger: ['blur','change']}
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 分配新的权限时选中的角色id
      selectedRoleId:'',

    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if(res.meta.status !== 200) {
        return this.$message.error('获取用户信息失败！')
      }
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      console.log(newSize);
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      console.log(newPage);
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    async userStateChange(userInfo) {
      // console.log(userInfo.mg_state);
      // 模板字符串
      const {data:res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if(res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功！')
    },
    // 监听用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if(!valid) return
        // 可以发起添加用户的网络请求
        const {data: res} = await this.$http.post('users',this.addForm)
        if(res.meta.status != 201) {
          this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id);
      const {data: res} = await this.$http.get('users/' + id)
      if(res.meta.status !== 200 ) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if(!valid) {
          return 
        }
        // 发起修改用户信息的数据请求
        // put 代表修改
        const {data: res} = await this.$http.put('users/' + this.editForm.id, {email: this.editForm.email, mobile: this.editForm.mobile})
        if(res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败！')
        }
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新用户列表
        this.getUserList()
        // 提示修改成功
        this.$message.success('更新用户成功！')
      })
      
    },
    // 根据id删除对应的用户信息
    async removeUserById(id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认了删除，则返回值为字符串 confirm
      // 如果用户取消了删除，则返回值为字符串 cancel
      // console.log(confirmResult);
      if(confirmResult !== 'confirm') {
        return this.$message.info('已取消删除！')
      }
      // 用户确认删除
      // console.log('确认了删除！');
      const {data: res} = await this.$http.delete('users/' + id)
      if(res.meta.status !== 200) {
        return this.$message.error('删除用户失败！')
      }
      this.$message.success('删除用户成功！')
      this.getUserList()
      // .then(() => {
      //   this.$message({
      //     type: 'success',
      //     message: '删除成功!'
      //   });
      // }).catch(() => {
      //   this.$message({
      //     type: 'info',
      //     message: '已取消删除'
      //   });          
      // });
    },
    // 展示分配角色的对话框
    async SetRole(user) {
      console.log('user', user);
      this.userInfo = user
      // 在展示对话框之前获取所有的角色列表
      const {data:res} = await this.$http.get('roles')
      if(res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolesList = res.data
      console.log(this.rolesList);
      
      this.setRoleDialogVisible = true

    },
    // 点击按钮，分配角色
    async saveRoleInfo() {
      // console.log('this.selectedRoleId', this.selectedRoleId);
      if(!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`,{
        rid: this.selectedRoleId 
      })
      if(res.meta.status !== 200) {
        return this.$message.error('分配新角色失败！')
      }
      this.$message.success('分配新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 关闭分配角色对话框，重置选中的id
    setRoleDialogClosed() {
      this.selectedRoleId = '',
      this.userInfo = {}
    }

  },
  
}
</script>

<style lang="less" scoped>
  .text {
    font-size: 14px;
  }

  .item {
    padding: 18px 0;
  }

  .box-card {
    width: 480px;
  }
</style>
